Communications: directive radio wave systems and devices (e.g. – Directive – Position indicating
Patent
1994-11-01
1997-06-10
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Position indicating
342357, 3644491, G01S 302
Patent
active
056380780
ABSTRACT:
Communication and positioning device for guidance installation for guiding mobile units on a track system. The positioning is carried out with great accuracy. Base stations placed along the track system are used for communication and positioning. Communication between the mobile units and base stations is carried out by way of a mobile radio system (DECT). Positioning is established by means of positioning equipment included in the mobile unit. On passage of a mobile unit past a base station, the positioning equipment of the mobile unit is updated with the aid of reference positioning equipment. This updating is carried out by way of a mobile radio system.
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patent: 5311194 (1994-05-01), Brown
patent: 5470233 (1995-11-01), Fruchterman et al.
patent: 5491636 (1996-02-01), Robertson et al.
patent: 5524081 (1996-06-01), Paul
Phan Dao L.
Tarcza Thomas H.
Telia AB
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